1125443005121 has 8 divisors (see below), whose sum is σ = 1191789377064. Its totient is φ = 1059112615680.

The previous prime is 1125443005109. The next prime is 1125443005177. The reversal of 1125443005121 is 1215003445211.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 360930600625 + 764512404496 = 600775^2 + 874364^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1125443005121 - 2¹⁴ = 1125442988737 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1125443005021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3850490 + ... + 4132451.

It is an arithmetic number, because the mean of its divisors is an integer number (148973672133).

Almost surely, 2^{1125443005121} is an apocalyptic number.

It is an amenable number.

1125443005121 is a deficient number, since it is larger than the sum of its proper divisors (66346371943).

1125443005121 is an equidigital number, since it uses as much as digits as its factorization.

1125443005121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7991251.

The product of its (nonzero) digits is 4800, while the sum is 29.

The spelling of 1125443005121 in words is "one trillion, one hundred twenty-five billion, four hundred forty-three million, five thousand, one hundred twenty-one".